Lampard already had an instant impact with Ruben Loftus-Cheek and Mason Mount as the pair signed new long-term deals at the club.
"I know the club are talking to Willian. They [Willian and Callum Hudson-Odoi] are both players I want in my squad. We’ve made good moves in pre-season. Mason Mount and [Ruben] Loftus-Cheek signed new contracts, that’s two good young players nailed down.
"We’re always trying to do that. From a football sense, I make my ideas clear and work very closely with [Chelsea director] Marina [Granovskaia] and the board and they’re two players we want to stay for sure."
Both of the players' contracts expire next summer, so contracts need to get signed before January which is heavily expected, otherwise they are free to speak to other clubs.